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Commit Graph

3 Commits (2336fc44acc15b9f2e8f6dcef1651f90d15c9cd9)

Author	SHA1	Message	Date
Ramiro Polla	384fe39623	swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats ... There is an issue with the constants used in YUV to YUV range conversion, where the upper bound is not respected when converting to mpeg range. With this commit, the constants are calculated at runtime, depending on the bit depth. This approach also allows us to more easily understand how the constants are derived. For bit depths <= 14, the number of fixed point bits has been set to 14 for all conversions, to simplify the code. For bit depths > 14, the number of fixed points bits has been raised and set to 18, to allow for the conversion to be accurate enough for the mpeg range to be respected. The convert functions now take the conversion constants (coeff and offset) as function arguments. For bit depths <= 14, coeff is unsigned 16-bit and offset is 32-bit. For bit depths > 14, coeff is unsigned 32-bit and offset is 64-bit. x86_64: chrRangeFromJpeg8_1920_c: 2127.4 2125.0 (1.00x) chrRangeFromJpeg16_1920_c: 2325.2 2127.2 (1.09x) chrRangeToJpeg8_1920_c: 3166.9 3168.7 (1.00x) chrRangeToJpeg16_1920_c: 2152.4 3164.8 (0.68x) lumRangeFromJpeg8_1920_c: 1263.0 1302.5 (0.97x) lumRangeFromJpeg16_1920_c: 1080.5 1299.2 (0.83x) lumRangeToJpeg8_1920_c: 1886.8 2112.2 (0.89x) lumRangeToJpeg16_1920_c: 1077.0 1906.5 (0.56x) aarch64 A55: chrRangeFromJpeg8_1920_c: 28835.2 28835.6 (1.00x) chrRangeFromJpeg16_1920_c: 28839.8 32680.8 (0.88x) chrRangeToJpeg8_1920_c: 23074.7 23075.4 (1.00x) chrRangeToJpeg16_1920_c: 17318.9 24996.0 (0.69x) lumRangeFromJpeg8_1920_c: 15389.7 15384.5 (1.00x) lumRangeFromJpeg16_1920_c: 15388.2 17306.7 (0.89x) lumRangeToJpeg8_1920_c: 19227.8 19226.6 (1.00x) lumRangeToJpeg16_1920_c: 15387.0 21146.3 (0.73x) aarch64 A76: chrRangeFromJpeg8_1920_c: 6324.4 6268.1 (1.01x) chrRangeFromJpeg16_1920_c: 6339.9 11521.5 (0.55x) chrRangeToJpeg8_1920_c: 9656.0 9612.8 (1.00x) chrRangeToJpeg16_1920_c: 6340.4 11651.8 (0.54x) lumRangeFromJpeg8_1920_c: 4422.0 4420.8 (1.00x) lumRangeFromJpeg16_1920_c: 4420.9 5762.0 (0.77x) lumRangeToJpeg8_1920_c: 5949.1 5977.5 (1.00x) lumRangeToJpeg16_1920_c: 4446.8 5946.2 (0.75x) NOTE: all simd optimizations for range_convert have been disabled. they will be re-enabled when they are fixed for each architecture. NOTE2: the same issue still exists in rgb2yuv conversions, which is not addressed in this commit.	2 months ago
Eric Lasota	8be23d424f	avcodec/roqvideo: use JPEG color range ... Signed-off-by: ejlasota <ejlasota@gmail.com> Also update fate test checksums Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Janne Grunau	c8148e5c93	fate: move vsynth reference files to their own directory	12 years ago
Mans Rullgard	7263cd5544	fate: convert codec-regression.sh to makefile rules ... Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago